1784 lines
46 KiB
C
1784 lines
46 KiB
C
/* evax-alpha.c -- BFD back-end for ALPHA EVAX (openVMS/AXP) files.
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Copyright 1996 Free Software Foundation, Inc.
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Written by Klaus Kämpf (kkaempf@progis.de)
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of proGIS Softwareentwicklung, Aachen, Germany
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include <stdio.h>
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#include "bfd.h"
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#include "sysdep.h"
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#include "bfdlink.h"
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#include "libbfd.h"
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#include "evax.h"
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static boolean evax_initialize PARAMS ((bfd *));
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static boolean fill_section_ptr PARAMS ((struct bfd_hash_entry *, PTR));
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static boolean evax_fixup_sections PARAMS ((bfd *));
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static boolean copy_symbols PARAMS ((struct bfd_hash_entry *, PTR));
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static bfd_reloc_status_type reloc_nil
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static const struct bfd_target *evax_object_p PARAMS ((bfd *abfd));
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static const struct bfd_target *evax_archive_p PARAMS ((bfd *abfd));
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static boolean evax_mkobject PARAMS ((bfd *abfd));
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static boolean evax_write_object_contents PARAMS ((bfd *abfd));
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static boolean evax_close_and_cleanup PARAMS ((bfd *abfd));
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static boolean evax_bfd_free_cached_info PARAMS ((bfd *abfd));
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static boolean evax_new_section_hook PARAMS ((bfd *abfd, asection *section));
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static boolean evax_get_section_contents
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PARAMS ((bfd *abfd, asection *section, PTR x1, file_ptr x2,
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bfd_size_type x3));
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static boolean evax_get_section_contents_in_window
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PARAMS ((bfd *abfd, asection *section, bfd_window *w, file_ptr offset,
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bfd_size_type count));
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static boolean evax_bfd_copy_private_bfd_data PARAMS ((bfd *src, bfd *dest));
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static boolean evax_bfd_copy_private_section_data
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PARAMS ((bfd *srcbfd, asection *srcsec, bfd *dstbfd, asection *dstsec));
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static boolean evax_bfd_copy_private_symbol_data
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PARAMS ((bfd *ibfd, asymbol *isym, bfd *obfd, asymbol *osym));
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static boolean evax_bfd_print_private_bfd_data
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PARAMS ((bfd *abfd, void *file));
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static char *evax_core_file_failing_command PARAMS ((bfd *abfd));
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static int evax_core_file_failing_signal PARAMS ((bfd *abfd));
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static boolean evax_core_file_matches_executable_p
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PARAMS ((bfd *abfd, bfd *bbfd));
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static boolean evax_slurp_armap PARAMS ((bfd *abfd));
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static boolean evax_slurp_extended_name_table PARAMS ((bfd *abfd));
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static boolean evax_construct_extended_name_table
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PARAMS ((bfd *abfd, char **tabloc, bfd_size_type *tablen,
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const char **name));
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static void evax_truncate_arname
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PARAMS ((bfd *abfd, CONST char *pathname, char *arhdr));
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static boolean evax_write_armap
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PARAMS ((bfd *arch, unsigned int elength, struct orl *map,
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unsigned int orl_count, int stridx));
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static PTR evax_read_ar_hdr PARAMS ((bfd *abfd));
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static bfd *evax_get_elt_at_index PARAMS ((bfd *abfd, symindex index));
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static bfd *evax_openr_next_archived_file PARAMS ((bfd *arch, bfd *prev));
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static boolean evax_update_armap_timestamp PARAMS ((bfd *abfd));
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static int evax_generic_stat_arch_elt PARAMS ((bfd *abfd, struct stat *stat));
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static long evax_get_symtab_upper_bound PARAMS ((bfd *abfd));
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static long evax_get_symtab PARAMS ((bfd *abfd, asymbol **symbols));
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static void evax_print_symbol
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PARAMS ((bfd *abfd, PTR file, asymbol *symbol, bfd_print_symbol_type how));
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static void evax_get_symbol_info
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PARAMS ((bfd *abfd, asymbol *symbol, symbol_info *ret));
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static boolean evax_bfd_is_local_label PARAMS ((bfd *abfd, asymbol *symbol));
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static alent *evax_get_lineno PARAMS ((bfd *abfd, asymbol *symbol));
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static boolean evax_find_nearest_line
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PARAMS ((bfd *abfd, asection *section, asymbol **symbols, bfd_vma offset,
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const char **file, const char **func, unsigned int *line));
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static asymbol *evax_bfd_make_debug_symbol
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PARAMS ((bfd *abfd, void *ptr, unsigned long size));
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static long evax_read_minisymbols
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PARAMS ((bfd *abfd, boolean dynamic, PTR *minisymsp, unsigned int *sizep));
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static asymbol *evax_minisymbol_to_symbol
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PARAMS ((bfd *abfd, boolean dynamic, const PTR minisym, asymbol *sym));
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static long evax_get_reloc_upper_bound PARAMS ((bfd *abfd, asection *sect));
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static long evax_canonicalize_reloc
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PARAMS ((bfd *abfd, asection *srcsec, arelent **location,
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asymbol **symbols));
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static const struct reloc_howto_struct *evax_bfd_reloc_type_lookup
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PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
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static boolean evax_set_arch_mach
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PARAMS ((bfd *abfd, enum bfd_architecture arch, unsigned long mach));
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static boolean evax_set_section_contents
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PARAMS ((bfd *abfd, asection *section, PTR location, file_ptr offset,
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bfd_size_type count));
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static int evax_sizeof_headers PARAMS ((bfd *abfd, boolean reloc));
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static bfd_byte *evax_bfd_get_relocated_section_contents
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PARAMS ((bfd *abfd, struct bfd_link_info *link_info,
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struct bfd_link_order *link_order, bfd_byte *data,
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boolean relocateable, asymbol **symbols));
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static boolean evax_bfd_relax_section
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PARAMS ((bfd *abfd, asection *section, struct bfd_link_info *link_info,
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boolean *again));
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static struct bfd_link_hash_table *evax_bfd_link_hash_table_create
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PARAMS ((bfd *abfd));
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static boolean evax_bfd_link_add_symbols
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PARAMS ((bfd *abfd, struct bfd_link_info *link_info));
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static boolean evax_bfd_final_link
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PARAMS ((bfd *abfd, struct bfd_link_info *link_info));
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static boolean evax_bfd_link_split_section
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PARAMS ((bfd *abfd, asection *section));
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static long evax_get_dynamic_symtab_upper_bound PARAMS ((bfd *abfd));
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static long evax_canonicalize_dynamic_symtab
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PARAMS ((bfd *abfd, asymbol **symbols));
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static long evax_get_dynamic_reloc_upper_bound PARAMS ((bfd *abfd));
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static long evax_canonicalize_dynamic_reloc
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PARAMS ((bfd *abfd, arelent **arel, asymbol **symbols));
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static boolean evax_bfd_merge_private_bfd_data PARAMS ((bfd *ibfd, bfd *obfd));
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static boolean evax_bfd_set_private_flags PARAMS ((bfd *abfd, flagword flags));
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#define evax_make_empty_symbol _bfd_evax_make_empty_symbol
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/*===========================================================================*/
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const bfd_target evax_alpha_vec =
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{
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"evax-alpha", /* name */
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bfd_target_evax_flavour,
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false, /* data byte order is little */
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false, /* header byte order is little */
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(HAS_RELOC | HAS_SYMS
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| WP_TEXT | D_PAGED), /* object flags */
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(SEC_ALLOC | SEC_LOAD | SEC_RELOC
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| SEC_READONLY | SEC_CODE | SEC_DATA
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| SEC_HAS_CONTENTS | SEC_IN_MEMORY), /* sect flags */
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0, /* symbol_leading_char */
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' ', /* ar_pad_char */
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15, /* ar_max_namelen */
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_putl16,
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_putl16,
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{_bfd_dummy_target, evax_object_p, /* bfd_check_format */
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evax_archive_p, _bfd_dummy_target},
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{bfd_false, evax_mkobject, /* bfd_set_format */
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_bfd_generic_mkarchive, bfd_false},
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{bfd_false, evax_write_object_contents, /* bfd_write_contents */
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_bfd_write_archive_contents, bfd_false},
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BFD_JUMP_TABLE_GENERIC (evax),
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BFD_JUMP_TABLE_COPY (evax),
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BFD_JUMP_TABLE_CORE (evax),
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BFD_JUMP_TABLE_ARCHIVE (evax),
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BFD_JUMP_TABLE_SYMBOLS (evax),
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BFD_JUMP_TABLE_RELOCS (evax),
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BFD_JUMP_TABLE_WRITE (evax),
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BFD_JUMP_TABLE_LINK (evax),
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BFD_JUMP_TABLE_DYNAMIC (evax),
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(PTR) 0
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};
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/*===========================================================================*/
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/* Initialize private data */
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static boolean
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evax_initialize (abfd)
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bfd *abfd;
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{
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int i;
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if (abfd->tdata.any != 0)
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return true;
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bfd_set_start_address (abfd, (bfd_vma)-1);
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abfd->tdata.any = ((struct evax_private_data_struct*)
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bfd_malloc (sizeof (struct evax_private_data_struct)));
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if (abfd->tdata.any == 0)
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return false;
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PRIV(evax_buf) = 0;
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PRIV(buf_size) = 0;
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PRIV(rec_length) = 0;
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PRIV(file_format) = FF_UNKNOWN;
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PRIV(filename) = NULL;
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PRIV(fixup_done) = false;
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PRIV(sections) = NULL;
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PRIV(stack) = ((struct stack_struct *)
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bfd_malloc (sizeof (struct stack_struct) * STACKSIZE));
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if (PRIV(stack) == 0)
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{
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evax_init_no_mem1:
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free (abfd->tdata.any);
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abfd->tdata.any = 0;
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return false;
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}
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PRIV(stackptr) = 0;
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PRIV(evax_symbol_table) = ((struct bfd_hash_table *)
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bfd_malloc (sizeof (struct bfd_hash_table)));
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if (PRIV(evax_symbol_table) == 0)
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{
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evax_init_no_mem2:
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free (PRIV(stack));
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PRIV(stack) = 0;
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goto evax_init_no_mem1;
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}
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if (!bfd_hash_table_init (PRIV(evax_symbol_table), _bfd_evax_hash_newfunc))
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return false;
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PRIV(location_stack) = ((struct location_struct *)
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bfd_malloc (sizeof (struct location_struct)
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* LOCATION_SAVE_SIZE));
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if (PRIV(location_stack) == 0)
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{
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evax_init_no_mem3:
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free (PRIV(evax_symbol_table));
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PRIV(evax_symbol_table) = 0;
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goto evax_init_no_mem2;
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}
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for (i = 0; i < EVAX_SECTION_COUNT; i++)
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PRIV(evax_section_table)[i] = NULL;
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PRIV(output_buf) = (unsigned char *) malloc (MAX_OUTREC_SIZE);
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if (PRIV(output_buf) == 0)
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{
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free (PRIV(location_stack));
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PRIV(location_stack) = 0;
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goto evax_init_no_mem3;
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}
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PRIV(push_level) = 0;
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PRIV(pushed_size) = 0;
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PRIV(length_pos) = 2;
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PRIV(output_size) = 0;
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PRIV(output_alignment) = 1;
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return true;
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}
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/* Fill symbol->section with section ptr
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symbol->section is filled with the section index for defined symbols
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during reading the EGSD section. But we need the pointer to the
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bfd section later.
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It has the correct value for referenced (undefined section) symbols
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called from bfd_hash_traverse in evax_fixup_sections */
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static boolean
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fill_section_ptr (entry, sections)
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struct bfd_hash_entry *entry;
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PTR sections;
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{
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asection *sec;
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asymbol *sym;
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sym = ((evax_symbol_entry *)entry)->symbol;
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sec = sym->section;
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if (!bfd_is_und_section (sec))
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{
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sec = ((evax_symbol_entry *)entry)->symbol->section =
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((asection **)sections)[(int)sec];
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}
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if (strcmp (sym->name, sec->name) == 0)
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sym->flags |= BSF_SECTION_SYM;
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||
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return true;
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}
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/* Fixup sections
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set up all pointers and arrays, counters and sizes are fixed now
|
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we build a private sections vector for easy access since sections
|
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are always referenced by an index number.
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alloc PRIV(sections) according to abfd->section_count
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copy abfd->sections to PRIV(sections) */
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static boolean
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evax_fixup_sections (abfd)
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bfd *abfd;
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{
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asection *s;
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if (PRIV(fixup_done))
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return true;
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PRIV(sections) = ((asection **)
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bfd_malloc (abfd->section_count * sizeof (asection *)));
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if (PRIV(sections) == 0)
|
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return false;
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PRIV(egsd_sec_count) = abfd->section_count;
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s = abfd->sections;
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while (s)
|
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{
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PRIV(sections)[s->index] = s;
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s = s->next;
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}
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/*
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* traverse symbol table and fill in all section pointers
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*/
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bfd_hash_traverse (PRIV(evax_symbol_table), fill_section_ptr,
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(PTR)(PRIV(sections)));
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PRIV(fixup_done) = true;
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|
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return true;
|
||
}
|
||
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/*===========================================================================*/
|
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|
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/* Check the format for a file being read.
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Return a (bfd_target *) if it's an object file or zero if not. */
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|
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static const struct bfd_target *
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evax_object_p (abfd)
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bfd *abfd;
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{
|
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int err = 0;
|
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int prev_type;
|
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#if EVAX_DEBUG
|
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evax_debug (1, "evax_object_p(%p)\n", abfd);
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#endif
|
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if (bfd_seek (abfd, 0L, SEEK_SET))
|
||
{
|
||
bfd_set_error (bfd_error_file_truncated);
|
||
return 0;
|
||
}
|
||
|
||
prev_type = -1;
|
||
|
||
do
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (3, "reading at %08lx\n", bfd_tell(abfd));
|
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#endif
|
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if (_bfd_evax_next_record (abfd) < 0)
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (2, "next_record failed\n");
|
||
#endif
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return 0;
|
||
}
|
||
|
||
if ((prev_type == EOBJ_S_C_EGSD) && (PRIV(rec_type) != EOBJ_S_C_EGSD))
|
||
{
|
||
if (evax_fixup_sections (abfd) == false)
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (2, "evax_fixup_sections failed\n");
|
||
#endif
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
prev_type = PRIV(rec_type);
|
||
|
||
switch (PRIV(rec_type))
|
||
{
|
||
case EOBJ_S_C_EMH:
|
||
err = _bfd_evax_slurp_emh (abfd);
|
||
break;
|
||
case EOBJ_S_C_EEOM:
|
||
err = _bfd_evax_slurp_eeom (abfd);
|
||
break;
|
||
case EOBJ_S_C_EGSD:
|
||
err = _bfd_evax_slurp_egsd (abfd);
|
||
break;
|
||
case EOBJ_S_C_ETIR:
|
||
err = _bfd_evax_slurp_etir (abfd);
|
||
break;
|
||
case EOBJ_S_C_EDBG:
|
||
err = _bfd_evax_slurp_edbg (abfd);
|
||
break;
|
||
case EOBJ_S_C_ETBT:
|
||
err = _bfd_evax_slurp_etbt (abfd);
|
||
break;
|
||
default:
|
||
err = -1;
|
||
}
|
||
if (err != 0)
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (2, "slurp type %d failed with %d\n", PRIV(rec_type), err);
|
||
#endif
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return 0;
|
||
}
|
||
}
|
||
while (prev_type != EOBJ_S_C_EEOM);
|
||
|
||
/* set arch_info to alpha */
|
||
|
||
{
|
||
const bfd_arch_info_type *arch = bfd_scan_arch ("alpha");
|
||
if (arch == 0)
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (2, "arch not found\n");
|
||
#endif
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return 0;
|
||
}
|
||
abfd->arch_info = arch;
|
||
}
|
||
|
||
return &evax_alpha_vec;
|
||
}
|
||
|
||
|
||
/* Check the format for a file being read.
|
||
Return a (bfd_target *) if it's an archive file or zero. */
|
||
|
||
static const struct bfd_target *
|
||
evax_archive_p (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_archive_p(%p)\n", abfd);
|
||
#endif
|
||
|
||
if (!evax_initialize (abfd))
|
||
return 0;
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Set the format of a file being written. */
|
||
|
||
static boolean
|
||
evax_mkobject (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_mkobject(%p)\n", abfd);
|
||
#endif
|
||
|
||
if (!evax_initialize (abfd))
|
||
return 0;
|
||
|
||
{
|
||
const bfd_arch_info_type *arch = bfd_scan_arch ("alpha");
|
||
if (arch == 0)
|
||
{
|
||
bfd_set_error(bfd_error_wrong_format);
|
||
return 0;
|
||
}
|
||
abfd->arch_info = arch;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Write cached information into a file being written, at bfd_close. */
|
||
|
||
static boolean
|
||
evax_write_object_contents (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_write_object_contents(%p)\n", abfd);
|
||
#endif
|
||
|
||
if (abfd->section_count > 0) /* we have sections */
|
||
{
|
||
if (_bfd_evax_write_emh (abfd) != 0)
|
||
return false;
|
||
if (_bfd_evax_write_egsd (abfd) != 0)
|
||
return false;
|
||
if (_bfd_evax_write_etir (abfd) != 0)
|
||
return false;
|
||
if (_bfd_evax_write_etbt (abfd) != 0)
|
||
return false;
|
||
if (_bfd_evax_write_eeom (abfd) != 0)
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
/*-- 4.1, generic -----------------------------------------------------------*/
|
||
|
||
/* Called when the BFD is being closed to do any necessary cleanup. */
|
||
|
||
static boolean
|
||
evax_close_and_cleanup (abfd)
|
||
bfd *abfd;
|
||
{
|
||
asection *sec;
|
||
evax_section *es, *es1;
|
||
evax_reloc *er, *er1;
|
||
int i;
|
||
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_close_and_cleanup(%p)\n", abfd);
|
||
#endif
|
||
if (abfd == 0)
|
||
return true;
|
||
|
||
if (PRIV(evax_buf) != NULL)
|
||
{
|
||
free (PRIV(evax_buf));
|
||
PRIV(evax_buf) = NULL;
|
||
}
|
||
PRIV(buf_size) = 0;
|
||
|
||
if (PRIV(filename) != NULL)
|
||
{
|
||
free (PRIV(filename));
|
||
PRIV(filename) = NULL;
|
||
}
|
||
|
||
if (PRIV(output_buf) != 0)
|
||
{
|
||
free (PRIV(output_buf));
|
||
PRIV(output_buf) = 0;
|
||
}
|
||
|
||
sec = abfd->sections;
|
||
while (sec != NULL)
|
||
{
|
||
if (sec->contents)
|
||
free (sec->contents);
|
||
sec = sec->next;
|
||
}
|
||
|
||
if (PRIV(sections) != NULL)
|
||
{
|
||
free (PRIV(sections));
|
||
PRIV(sections) = NULL;
|
||
}
|
||
|
||
if (PRIV(evax_symbol_table))
|
||
{
|
||
bfd_hash_table_free (PRIV(evax_symbol_table));
|
||
PRIV(evax_symbol_table) = 0;
|
||
}
|
||
|
||
if (PRIV(stack))
|
||
{
|
||
free (PRIV(stack));
|
||
PRIV(stack) = 0;
|
||
}
|
||
|
||
if (PRIV(location_stack))
|
||
{
|
||
free (PRIV(location_stack));
|
||
PRIV(location_stack) = 0;
|
||
}
|
||
|
||
for (i = 0; i < EVAX_SECTION_COUNT; i++)
|
||
{
|
||
es = PRIV(evax_section_table)[i];
|
||
while (es != NULL)
|
||
{
|
||
es1 = es->next;
|
||
free (es);
|
||
es = es1;
|
||
}
|
||
PRIV(evax_section_table)[i] = NULL;
|
||
}
|
||
|
||
free (abfd->tdata.any);
|
||
abfd->tdata.any = NULL;
|
||
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Ask the BFD to free all cached information. */
|
||
static boolean
|
||
evax_bfd_free_cached_info (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_free_cached_info(%p)\n", abfd);
|
||
#endif
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Called when a new section is created. */
|
||
|
||
static boolean
|
||
evax_new_section_hook (abfd, section)
|
||
bfd *abfd;
|
||
asection *section;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_new_section_hook(%p, %s)\n", abfd, section->name);
|
||
#endif
|
||
bfd_set_section_alignment(abfd, section, 4);
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Read the contents of a section.
|
||
buf points to a buffer of buf_size bytes to be filled with
|
||
section data (starting at offset into section) */
|
||
|
||
static boolean
|
||
evax_get_section_contents (abfd, section, buf, offset, buf_size)
|
||
bfd *abfd;
|
||
asection *section;
|
||
PTR buf;
|
||
file_ptr offset;
|
||
bfd_size_type buf_size;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_get_section_contents(%p, %s, %p, off %ld, size %d)\n",
|
||
abfd, section->name, buf, offset, (int)buf_size);
|
||
#endif
|
||
|
||
/* shouldn't be called, since all sections are IN_MEMORY */
|
||
|
||
return false;
|
||
}
|
||
|
||
/* Read the contents of a section.
|
||
buf points to a buffer of buf_size bytes to be filled with
|
||
section data (starting at offset into section) */
|
||
|
||
static boolean
|
||
evax_get_section_contents_in_window (abfd, section, w, offset, count)
|
||
bfd *abfd;
|
||
asection *section;
|
||
bfd_window *w;
|
||
file_ptr offset;
|
||
bfd_size_type count;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_get_section_contents_in_window(%p, %s, %p, off %ld, count %d)\n",
|
||
abfd, section->name, w, offset, (int)count);
|
||
#endif
|
||
|
||
/* shouldn't be called, since all sections are IN_MEMORY */
|
||
|
||
return false;
|
||
}
|
||
|
||
/*-- Part 4.2, copy private data --------------------------------------------*/
|
||
|
||
/* Called to copy BFD general private data from one object file
|
||
to another. */
|
||
|
||
static boolean
|
||
evax_bfd_copy_private_bfd_data (src, dest)
|
||
bfd *src;
|
||
bfd *dest;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_copy_private_bfd_data(%p, %p)\n", src, dest);
|
||
#endif
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Merge private BFD information from the BFD @var{ibfd} to the
|
||
the output file BFD @var{obfd} when linking. Return <<true>>
|
||
on success, <<false>> on error. Possible error returns are:
|
||
|
||
o <<bfd_error_no_memory>> -
|
||
Not enough memory exists to create private data for @var{obfd}. */
|
||
|
||
static boolean
|
||
evax_bfd_merge_private_bfd_data (ibfd, obfd)
|
||
bfd *ibfd;
|
||
bfd *obfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1,"evax_bfd_merge_private_bfd_data(%p, %p)\n", ibfd, obfd);
|
||
#endif
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Set private BFD flag information in the BFD @var{abfd}.
|
||
Return <<true>> on success, <<false>> on error. Possible error
|
||
returns are:
|
||
|
||
o <<bfd_error_no_memory>> -
|
||
Not enough memory exists to create private data for @var{obfd}. */
|
||
|
||
static boolean
|
||
evax_bfd_set_private_flags (abfd, flags)
|
||
bfd *abfd;
|
||
flagword flags;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1,"evax_bfd_set_private_flags(%p, %lx)\n", abfd, (long)flags);
|
||
#endif
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Called to copy BFD private section data from one object file
|
||
to another. */
|
||
|
||
static boolean
|
||
evax_bfd_copy_private_section_data (srcbfd, srcsec, dstbfd, dstsec)
|
||
bfd *srcbfd;
|
||
asection *srcsec;
|
||
bfd *dstbfd;
|
||
asection *dstsec;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_copy_private_section_data(%p, %s, %p, %s)\n",
|
||
srcbfd, srcsec->name, dstbfd, dstsec->name);
|
||
#endif
|
||
return true;
|
||
}
|
||
|
||
/* Called to copy BFD private symbol data from one object file
|
||
to another. */
|
||
|
||
static boolean
|
||
evax_bfd_copy_private_symbol_data (ibfd, isym, obfd, osym)
|
||
bfd *ibfd;
|
||
asymbol *isym;
|
||
bfd *obfd;
|
||
asymbol *osym;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_copy_private_symbol_data(%p, %s, %p, %s)\n",
|
||
ibfd, isym->name, obfd, osym->name);
|
||
#endif
|
||
return true;
|
||
}
|
||
|
||
/*-- Part 4.3, core file ----------------------------------------------------*/
|
||
|
||
/* Return a read-only string explaining which program was running
|
||
when it failed and produced the core file abfd. */
|
||
|
||
static char *
|
||
evax_core_file_failing_command (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_core_file_failing_command(%p)\n", abfd);
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Returns the signal number which caused the core dump which
|
||
generated the file the BFD abfd is attached to. */
|
||
|
||
static int
|
||
evax_core_file_failing_signal (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_core_file_failing_signal(%p)\n", abfd);
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Return true if the core file attached to core_bfd was generated
|
||
by a run of the executable file attached to exec_bfd, false otherwise. */
|
||
|
||
static boolean
|
||
evax_core_file_matches_executable_p (abfd, bbfd)
|
||
bfd *abfd;
|
||
bfd *bbfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_core_file_matches_executable_p(%p, %p)\n", abfd, bbfd);
|
||
#endif
|
||
return false;
|
||
}
|
||
|
||
/*-- Part 4.4, archive ------------------------------------------------------*/
|
||
|
||
/* ??? do something with an archive map.
|
||
Return false on error, true otherwise. */
|
||
|
||
static boolean
|
||
evax_slurp_armap (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_slurp_armap(%p)\n", abfd);
|
||
#endif
|
||
return false;
|
||
}
|
||
|
||
|
||
/* ??? do something with an extended name table.
|
||
Return false on error, true otherwise. */
|
||
|
||
static boolean
|
||
evax_slurp_extended_name_table (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_slurp_extended_name_table(%p)\n", abfd);
|
||
#endif
|
||
return false;
|
||
}
|
||
|
||
|
||
/* ??? do something with an extended name table.
|
||
Return false on error, true otherwise. */
|
||
|
||
static boolean
|
||
evax_construct_extended_name_table (abfd, tabloc, tablen, name)
|
||
bfd *abfd;
|
||
char **tabloc;
|
||
bfd_size_type *tablen;
|
||
const char **name;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_construct_extended_name_table(%p)\n", abfd);
|
||
#endif
|
||
return false;
|
||
}
|
||
|
||
|
||
/* Truncate the name of an archive to match system-dependent restrictions */
|
||
|
||
static void
|
||
evax_truncate_arname (abfd, pathname, arhdr)
|
||
bfd *abfd;
|
||
CONST char *pathname;
|
||
char *arhdr;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_truncate_arname(%p, %s, %s)\n", abfd, pathname, arhdr);
|
||
#endif
|
||
return;
|
||
}
|
||
|
||
|
||
/* ??? write archive map */
|
||
|
||
static boolean
|
||
evax_write_armap (arch, elength, map, orl_count, stridx)
|
||
bfd *arch;
|
||
unsigned int elength;
|
||
struct orl *map;
|
||
unsigned int orl_count;
|
||
int stridx;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_write_armap(%p, %d, %p, %d %d)\n",
|
||
arch, elength, map, orl_count, stridx);
|
||
#endif
|
||
return true;
|
||
}
|
||
|
||
/* Read archive header ??? */
|
||
|
||
static PTR
|
||
evax_read_ar_hdr (abfd)
|
||
bfd * abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_read_ar_hdr(%p)\n", abfd);
|
||
#endif
|
||
return (PTR)0;
|
||
}
|
||
|
||
|
||
/* Provided a BFD, @var{archive}, containing an archive and NULL, open
|
||
an input BFD on the first contained element and returns that.
|
||
Subsequent calls should pass the archive and the previous return value
|
||
to return a created BFD to the next contained element.
|
||
NULL is returned when there are no more. */
|
||
|
||
static bfd *
|
||
evax_openr_next_archived_file (arch, prev)
|
||
bfd *arch;
|
||
bfd *prev;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_openr_next_archived_file(%p, %p)\n", arch, prev);
|
||
#endif
|
||
return false;
|
||
}
|
||
|
||
|
||
/* Return the BFD which is referenced by the symbol in ABFD indexed by
|
||
INDEX. INDEX should have been returned by bfd_get_next_mapent. */
|
||
|
||
static bfd *
|
||
evax_get_elt_at_index (abfd, index)
|
||
bfd *abfd;
|
||
symindex index;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_get_elt_at_index(%p, %p)\n", abfd, index);
|
||
#endif
|
||
return _bfd_generic_get_elt_at_index(abfd, index);
|
||
}
|
||
|
||
|
||
/* ???
|
||
-> bfd_generic_stat_arch_elt */
|
||
|
||
static int
|
||
evax_generic_stat_arch_elt (abfd, stat)
|
||
bfd *abfd;
|
||
struct stat *stat;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_generic_stat_arch_elt(%p, %p)\n", abfd, stat);
|
||
#endif
|
||
return bfd_generic_stat_arch_elt(abfd, stat);
|
||
}
|
||
|
||
|
||
/* This is a new function in bfd 2.5 */
|
||
|
||
static boolean
|
||
evax_update_armap_timestamp (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_update_armap_timestamp(%p)\n", abfd);
|
||
#endif
|
||
return true;
|
||
}
|
||
|
||
/*-- Part 4.5, symbols --------------------------------------------------------*/
|
||
|
||
/* Return the number of bytes required to store a vector of pointers
|
||
to asymbols for all the symbols in the BFD abfd, including a
|
||
terminal NULL pointer. If there are no symbols in the BFD,
|
||
then return 0. If an error occurs, return -1. */
|
||
|
||
static long
|
||
evax_get_symtab_upper_bound (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_get_symtab_upper_bound(%p), %d symbols\n", abfd, PRIV(egsd_sym_count));
|
||
#endif
|
||
return (PRIV(egsd_sym_count)+1) * sizeof(asymbol *);
|
||
}
|
||
|
||
|
||
/* Copy symbols from hash table to symbol vector
|
||
|
||
called from bfd_hash_traverse in evax_get_symtab
|
||
init counter to 0 if entry == 0 */
|
||
|
||
static boolean
|
||
copy_symbols (entry, arg)
|
||
struct bfd_hash_entry *entry;
|
||
PTR arg;
|
||
{
|
||
bfd *abfd = (bfd *) arg;
|
||
|
||
if (entry == NULL) /* init counter */
|
||
PRIV(symnum) = 0;
|
||
else /* fill vector, inc counter */
|
||
PRIV(symcache)[PRIV(symnum)++] = ((evax_symbol_entry *)entry)->symbol;
|
||
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Read the symbols from the BFD abfd, and fills in the vector
|
||
location with pointers to the symbols and a trailing NULL.
|
||
|
||
return # of symbols read */
|
||
|
||
static long
|
||
evax_get_symtab (abfd, symbols)
|
||
bfd *abfd;
|
||
asymbol **symbols;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_get_symtab(%p, <ret>)\n", abfd);
|
||
#endif
|
||
|
||
/* init counter */
|
||
(void)copy_symbols((struct bfd_hash_entry *)0, abfd);
|
||
|
||
/* traverse table and fill symbols vector */
|
||
|
||
PRIV(symcache) = symbols;
|
||
bfd_hash_traverse(PRIV(evax_symbol_table), copy_symbols, (PTR)abfd);
|
||
|
||
symbols[bfd_get_symcount(abfd)] = NULL;
|
||
|
||
return bfd_get_symcount(abfd);
|
||
}
|
||
|
||
|
||
/* Create a new asymbol structure for the BFD abfd and return a pointer
|
||
to it.
|
||
This routine is necessary because each back end has private information
|
||
surrounding the asymbol. Building your own asymbol and pointing to it
|
||
will not create the private information, and will cause problems later on. */
|
||
|
||
asymbol *
|
||
_bfd_evax_make_empty_symbol (abfd)
|
||
bfd *abfd;
|
||
{
|
||
asymbol *symbol = (asymbol *)bfd_zalloc(abfd, sizeof(asymbol));
|
||
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "_bfd_evax_make_empty_symbol(%p)\n", abfd);
|
||
#endif
|
||
|
||
if (symbol == 0)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return 0;
|
||
}
|
||
symbol->the_bfd = abfd;
|
||
|
||
return symbol;
|
||
}
|
||
|
||
|
||
/* Print symbol to file according to how. how is one of
|
||
bfd_print_symbol_name just print the name
|
||
bfd_print_symbol_more print more (???)
|
||
bfd_print_symbol_all print all we know, which is not much right now :-) */
|
||
|
||
static void
|
||
evax_print_symbol (abfd, file, symbol, how)
|
||
bfd *abfd;
|
||
PTR file;
|
||
asymbol *symbol;
|
||
bfd_print_symbol_type how;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_print_symbol(%p, %p, %p, %d)\n", abfd, file, symbol, how);
|
||
#endif
|
||
|
||
switch (how)
|
||
{
|
||
case bfd_print_symbol_name:
|
||
case bfd_print_symbol_more:
|
||
fprintf((FILE *)file," %s", symbol->name);
|
||
break;
|
||
|
||
break;
|
||
|
||
case bfd_print_symbol_all:
|
||
{
|
||
CONST char *section_name = symbol->section->name;
|
||
|
||
bfd_print_symbol_vandf((PTR)file,symbol);
|
||
|
||
fprintf((FILE *)file," %-8s %s", section_name, symbol->name);
|
||
}
|
||
break;
|
||
}
|
||
return;
|
||
}
|
||
|
||
|
||
/* Return information about symbol in ret.
|
||
|
||
fill type, value and name
|
||
type:
|
||
A absolute
|
||
B bss segment symbol
|
||
C common symbol
|
||
D data segment symbol
|
||
f filename
|
||
t a static function symbol
|
||
T text segment symbol
|
||
U undefined
|
||
- debug */
|
||
|
||
static void
|
||
evax_get_symbol_info (abfd, symbol, ret)
|
||
bfd *abfd;
|
||
asymbol *symbol;
|
||
symbol_info *ret;
|
||
{
|
||
asection *sec;
|
||
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_get_symbol_info(%p, %p, <ret>)\n", abfd, symbol);
|
||
#endif
|
||
|
||
sec = symbol->section;
|
||
|
||
if (bfd_is_com_section (sec))
|
||
ret->type = 'C';
|
||
else if (bfd_is_abs_section (sec))
|
||
ret->type = 'A';
|
||
else if (bfd_is_und_section (sec))
|
||
ret->type = 'U';
|
||
else if (bfd_is_abs_section (sec))
|
||
ret->type = 'A';
|
||
else if (bfd_is_ind_section (sec))
|
||
ret->type = 'I';
|
||
else if (bfd_get_section_flags (abfd, sec) & SEC_CODE)
|
||
ret->type = 'T';
|
||
else if (bfd_get_section_flags (abfd, sec) & SEC_DATA)
|
||
ret->type = 'D';
|
||
else if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
|
||
ret->type = 'B';
|
||
else
|
||
ret->type = '-';
|
||
|
||
if (ret->type != 'U')
|
||
ret->value = symbol->value + symbol->section->vma;
|
||
else
|
||
ret->value = 0;
|
||
ret->name = symbol->name;
|
||
|
||
return;
|
||
}
|
||
|
||
|
||
/* Return true if the given symbol sym in the BFD abfd is
|
||
a compiler generated local label, else return false. */
|
||
|
||
static boolean
|
||
evax_bfd_is_local_label (abfd, symbol)
|
||
bfd *abfd;
|
||
asymbol *symbol;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_is_local_label(%p, %p)\n", abfd, symbol);
|
||
#endif
|
||
return false;
|
||
}
|
||
|
||
|
||
/* Get source line number for symbol */
|
||
|
||
static alent *
|
||
evax_get_lineno (abfd, symbol)
|
||
bfd *abfd;
|
||
asymbol *symbol;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_get_lineno(%p, %p)\n", abfd, symbol);
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Provided a BFD, a section and an offset into the section, calculate and
|
||
return the name of the source file and the line nearest to the wanted
|
||
location. */
|
||
|
||
static boolean
|
||
evax_find_nearest_line (abfd, section, symbols, offset, file, func, line)
|
||
bfd *abfd;
|
||
asection *section;
|
||
asymbol **symbols;
|
||
bfd_vma offset;
|
||
CONST char **file;
|
||
CONST char **func;
|
||
unsigned int *line;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_find_nearest_line(%p, %s, %p, %ld, <ret>, <ret>, <ret>)\n",
|
||
abfd, section->name, symbols, (long int)offset);
|
||
#endif
|
||
return false;
|
||
}
|
||
|
||
|
||
/* Back-door to allow format-aware applications to create debug symbols
|
||
while using BFD for everything else. Currently used by the assembler
|
||
when creating COFF files. */
|
||
|
||
static asymbol *
|
||
evax_bfd_make_debug_symbol (abfd, ptr, size)
|
||
bfd *abfd;
|
||
void *ptr;
|
||
unsigned long size;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_make_debug_symbol(%p, %p, %ld)\n", abfd, ptr, size);
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Read minisymbols. For minisymbols, we use the unmodified a.out
|
||
symbols. The minisymbol_to_symbol function translates these into
|
||
BFD asymbol structures. */
|
||
|
||
static long
|
||
evax_read_minisymbols (abfd, dynamic, minisymsp, sizep)
|
||
bfd *abfd;
|
||
boolean dynamic;
|
||
PTR *minisymsp;
|
||
unsigned int *sizep;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_read_minisymbols(%p, %d, %p, %d)\n", abfd, dynamic, minisymsp, *sizep);
|
||
#endif
|
||
return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
|
||
}
|
||
|
||
/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
|
||
unmodified a.out symbol. The SYM argument is a structure returned
|
||
by bfd_make_empty_symbol, which we fill in here. */
|
||
|
||
static asymbol *
|
||
evax_minisymbol_to_symbol (abfd, dynamic, minisym, sym)
|
||
bfd *abfd;
|
||
boolean dynamic;
|
||
const PTR minisym;
|
||
asymbol *sym;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_minisymbol_to_symbol(%p, %d, %p, %p)\n", abfd, dynamic, minisym, sym);
|
||
#endif
|
||
return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
|
||
}
|
||
|
||
/*-- Part 4.6, relocations --------------------------------------------------*/
|
||
|
||
/* Return the number of bytes required to store the relocation information
|
||
associated with section sect attached to bfd abfd.
|
||
If an error occurs, return -1. */
|
||
|
||
static long
|
||
evax_get_reloc_upper_bound (abfd, section)
|
||
bfd *abfd;
|
||
asection *section;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_get_reloc_upper_bound(%p, %s)\n", abfd, section->name);
|
||
#endif
|
||
return -1L;
|
||
}
|
||
|
||
|
||
/* Call the back end associated with the open BFD abfd and translate the
|
||
external form of the relocation information attached to sec into the
|
||
internal canonical form. Place the table into memory at loc, which has
|
||
been preallocated, usually by a call to bfd_get_reloc_upper_bound.
|
||
Returns the number of relocs, or -1 on error. */
|
||
|
||
static long
|
||
evax_canonicalize_reloc (abfd, section, location, symbols)
|
||
bfd *abfd;
|
||
asection *section;
|
||
arelent **location;
|
||
asymbol **symbols;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_canonicalize_reloc(%p, %s, <ret>, <ret>)\n", abfd, section->name);
|
||
#endif
|
||
return false;
|
||
}
|
||
|
||
/*---------------------------------------------------------------------------*/
|
||
/* this is just copied from ecoff-alpha, needs to be fixed probably */
|
||
|
||
/* How to process the various reloc types. */
|
||
|
||
static bfd_reloc_status_type
|
||
reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message)
|
||
bfd *abfd;
|
||
arelent *reloc;
|
||
asymbol *sym;
|
||
PTR data;
|
||
asection *sec;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "reloc_nil(abfd %p, output_bfd %p)\n", abfd, output_bfd);
|
||
evax_debug (2, "In section %s, symbol %s\n",
|
||
sec->name, sym->name);
|
||
evax_debug (2, "reloc sym %s, addr %08lx, addend %08lx, reloc is a %s\n",
|
||
reloc->sym_ptr_ptr[0]->name,
|
||
(unsigned long)reloc->address,
|
||
(unsigned long)reloc->addend, reloc->howto->name);
|
||
evax_debug (2, "data at %p\n", data);
|
||
/* _bfd_hexdump (2, data, bfd_get_reloc_size(reloc->howto),0); */
|
||
#endif
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
|
||
from smaller values. Start with zero, widen, *then* decrement. */
|
||
#define MINUS_ONE (((bfd_vma)0) - 1)
|
||
|
||
static reloc_howto_type alpha_howto_table[] =
|
||
{
|
||
HOWTO (ALPHA_R_IGNORE, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
8, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"IGNORE", /* name */
|
||
true, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* A 64 bit reference to a symbol. */
|
||
HOWTO (ALPHA_R_REFQUAD, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"REFQUAD", /* name */
|
||
true, /* partial_inplace */
|
||
MINUS_ONE, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 21 bit branch. The native assembler generates these for
|
||
branches within the text segment, and also fills in the PC
|
||
relative offset in the instruction. */
|
||
HOWTO (ALPHA_R_BRADDR, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
21, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"BRADDR", /* name */
|
||
true, /* partial_inplace */
|
||
0x1fffff, /* src_mask */
|
||
0x1fffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A hint for a jump to a register. */
|
||
HOWTO (ALPHA_R_HINT, /* type */
|
||
2, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
14, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"HINT", /* name */
|
||
true, /* partial_inplace */
|
||
0x3fff, /* src_mask */
|
||
0x3fff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 16 bit PC relative offset. */
|
||
HOWTO (ALPHA_R_SREL16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"SREL16", /* name */
|
||
true, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 32 bit PC relative offset. */
|
||
HOWTO (ALPHA_R_SREL32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"SREL32", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 64 bit PC relative offset. */
|
||
HOWTO (ALPHA_R_SREL64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"SREL64", /* name */
|
||
true, /* partial_inplace */
|
||
MINUS_ONE, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Push a value on the reloc evaluation stack. */
|
||
HOWTO (ALPHA_R_OP_PUSH, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"OP_PUSH", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Store the value from the stack at the given address. Store it in
|
||
a bitfield of size r_size starting at bit position r_offset. */
|
||
HOWTO (ALPHA_R_OP_STORE, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"OP_STORE", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Subtract the reloc address from the value on the top of the
|
||
relocation stack. */
|
||
HOWTO (ALPHA_R_OP_PSUB, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"OP_PSUB", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Shift the value on the top of the relocation stack right by the
|
||
given value. */
|
||
HOWTO (ALPHA_R_OP_PRSHIFT, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"OP_PRSHIFT", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Hack. Linkage is done by linker. */
|
||
HOWTO (ALPHA_R_LINKAGE, /* type */
|
||
0, /* rightshift */
|
||
8, /* size (0 = byte, 1 = short, 2 = long) */
|
||
256, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"LINKAGE", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 32 bit reference to a symbol. */
|
||
HOWTO (ALPHA_R_REFLONG, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
reloc_nil, /* special_function */
|
||
"REFLONG", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
};
|
||
|
||
/* Return a pointer to a howto structure which, when invoked, will perform
|
||
the relocation code on data from the architecture noted. */
|
||
|
||
static const struct reloc_howto_struct *
|
||
evax_bfd_reloc_type_lookup (abfd, code)
|
||
bfd *abfd;
|
||
bfd_reloc_code_real_type code;
|
||
{
|
||
int alpha_type;
|
||
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_reloc_type_lookup(%p, %d)\t", abfd, code);
|
||
#endif
|
||
|
||
switch (code)
|
||
{
|
||
case BFD_RELOC_16: alpha_type = ALPHA_R_SREL16; break;
|
||
case BFD_RELOC_32: alpha_type = ALPHA_R_REFLONG; break;
|
||
case BFD_RELOC_64: alpha_type = ALPHA_R_REFQUAD; break;
|
||
case BFD_RELOC_CTOR: alpha_type = ALPHA_R_REFQUAD; break;
|
||
case BFD_RELOC_23_PCREL_S2: alpha_type = ALPHA_R_BRADDR; break;
|
||
case BFD_RELOC_ALPHA_HINT: alpha_type = ALPHA_R_HINT; break;
|
||
case BFD_RELOC_16_PCREL: alpha_type = ALPHA_R_SREL16; break;
|
||
case BFD_RELOC_32_PCREL: alpha_type = ALPHA_R_SREL32; break;
|
||
case BFD_RELOC_64_PCREL: alpha_type = ALPHA_R_SREL64; break;
|
||
case BFD_RELOC_ALPHA_LINKAGE: alpha_type = ALPHA_R_LINKAGE; break;
|
||
#if 0
|
||
case ???: alpha_type = ALPHA_R_OP_PUSH; break;
|
||
case ???: alpha_type = ALPHA_R_OP_STORE; break;
|
||
case ???: alpha_type = ALPHA_R_OP_PSUB; break;
|
||
case ???: alpha_type = ALPHA_R_OP_PRSHIFT;break;
|
||
case ???: alpha_type = ALPHA_R_GPVALUE; break;
|
||
#endif
|
||
default:
|
||
(*_bfd_error_handler) ("reloc (%d) is *UNKNOWN*", code);
|
||
return (const struct reloc_howto_struct *) NULL;
|
||
}
|
||
#if EVAX_DEBUG
|
||
evax_debug (2, "reloc is %s\n", alpha_howto_table[alpha_type].name);
|
||
#endif
|
||
return &alpha_howto_table[alpha_type];
|
||
}
|
||
|
||
|
||
/*-- Part 4.7, writing an object file ---------------------------------------*/
|
||
|
||
/* Set the architecture and machine type in BFD abfd to arch and mach.
|
||
Find the correct pointer to a structure and insert it into the arch_info
|
||
pointer. */
|
||
|
||
static boolean
|
||
evax_set_arch_mach (abfd, arch, mach)
|
||
bfd *abfd;
|
||
enum bfd_architecture arch;
|
||
unsigned long mach;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_set_arch_mach(%p, %d, %ld)\n", abfd, arch, mach);
|
||
#endif
|
||
abfd->arch_info = bfd_scan_arch("alpha");
|
||
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Sets the contents of the section section in BFD abfd to the data starting
|
||
in memory at data. The data is written to the output section starting at
|
||
offset offset for count bytes.
|
||
|
||
Normally true is returned, else false. Possible error returns are:
|
||
o bfd_error_no_contents - The output section does not have the
|
||
SEC_HAS_CONTENTS attribute, so nothing can be written to it.
|
||
o and some more too */
|
||
|
||
static boolean
|
||
evax_set_section_contents (abfd, section, location, offset, count)
|
||
bfd *abfd;
|
||
asection *section;
|
||
PTR location;
|
||
file_ptr offset;
|
||
bfd_size_type count;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_set_section_contents(%p, sec %s, loc %p, off %ld, count %d)\n",
|
||
abfd, section->name, location, (long int)offset, (int)count);
|
||
evax_debug (2, "secraw %d, seccooked %d\n", (int)section->_raw_size, (int)section->_cooked_size);
|
||
#endif
|
||
return _bfd_save_evax_section(abfd, section, location, offset, count);
|
||
}
|
||
|
||
|
||
/*-- Part 4.8, linker -------------------------------------------------------*/
|
||
|
||
/* Get the size of the section headers. */
|
||
|
||
static int
|
||
evax_sizeof_headers (abfd, reloc)
|
||
bfd *abfd;
|
||
boolean reloc;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_sizeof_headers(%p, %s)\n", abfd, (reloc)?"True":"False");
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Provides default handling of relocation effort for back ends
|
||
which can't be bothered to do it efficiently. */
|
||
|
||
static bfd_byte *
|
||
evax_bfd_get_relocated_section_contents (abfd, link_info, link_order, data,
|
||
relocateable, symbols)
|
||
bfd *abfd;
|
||
struct bfd_link_info *link_info;
|
||
struct bfd_link_order *link_order;
|
||
bfd_byte *data;
|
||
boolean relocateable;
|
||
asymbol **symbols;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_get_relocated_section_contents(%p, %p, %p, %p, %s, %p)\n",
|
||
abfd, link_info, link_order, data, (relocateable)?"True":"False", symbols);
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* ??? */
|
||
|
||
static boolean
|
||
evax_bfd_relax_section (abfd, section, link_info, again)
|
||
bfd *abfd;
|
||
asection *section;
|
||
struct bfd_link_info *link_info;
|
||
boolean *again;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_relax_section(%p, %s, %p, <ret>)\n",
|
||
abfd, section->name, link_info);
|
||
#endif
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Create a hash table for the linker. Different backends store
|
||
different information in this table. */
|
||
|
||
static struct bfd_link_hash_table *
|
||
evax_bfd_link_hash_table_create (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_link_hash_table_create(%p)\n", abfd);
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Add symbols from this object file into the hash table. */
|
||
|
||
static boolean
|
||
evax_bfd_link_add_symbols (abfd, link_info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *link_info;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_link_add_symbols(%p, %p)\n", abfd, link_info);
|
||
#endif
|
||
return false;
|
||
}
|
||
|
||
|
||
/* Do a link based on the link_order structures attached to each
|
||
section of the BFD. */
|
||
|
||
static boolean
|
||
evax_bfd_final_link (abfd, link_info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *link_info;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_final_link(%p, %p)\n", abfd, link_info);
|
||
#endif
|
||
return true;
|
||
}
|
||
|
||
/* Should this section be split up into smaller pieces during linking. */
|
||
|
||
static boolean
|
||
evax_bfd_link_split_section (abfd, section)
|
||
bfd *abfd;
|
||
asection *section;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_link_split_section(%p, %s)\n", abfd, section->name);
|
||
#endif
|
||
return false;
|
||
}
|
||
|
||
/*-- Part 4.9, dynamic symbols and relocations ------------------------------*/
|
||
|
||
/* Get the amount of memory required to hold the dynamic symbols. */
|
||
|
||
static long
|
||
evax_get_dynamic_symtab_upper_bound (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_get_dynamic_symtab_upper_bound(%p)\n", abfd);
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
static boolean
|
||
evax_bfd_print_private_bfd_data (abfd, file)
|
||
bfd *abfd;
|
||
void *file;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_bfd_print_private_bfd_data(%p)\n", abfd);
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Read in the dynamic symbols. */
|
||
|
||
static long
|
||
evax_canonicalize_dynamic_symtab (abfd, symbols)
|
||
bfd *abfd;
|
||
asymbol **symbols;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_canonicalize_dynamic_symtab(%p, <ret>)\n", abfd);
|
||
#endif
|
||
return 0L;
|
||
}
|
||
|
||
|
||
/* Get the amount of memory required to hold the dynamic relocs. */
|
||
|
||
static long
|
||
evax_get_dynamic_reloc_upper_bound (abfd)
|
||
bfd *abfd;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_get_dynamic_reloc_upper_bound(%p)\n", abfd);
|
||
#endif
|
||
return 0L;
|
||
}
|
||
|
||
|
||
/* Read in the dynamic relocs. */
|
||
|
||
static long
|
||
evax_canonicalize_dynamic_reloc (abfd, arel, symbols)
|
||
bfd *abfd;
|
||
arelent **arel;
|
||
asymbol **symbols;
|
||
{
|
||
#if EVAX_DEBUG
|
||
evax_debug (1, "evax_canonicalize_dynamic_reloc(%p)\n", abfd);
|
||
#endif
|
||
return 0L;
|
||
}
|